1. business and industrial
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Doha, Qatar, 2015
2015 SCIEI
Doha, Qatar
CONFERENCES PROGRAM
2015 The 5th International Conference on Advanced Materials Research
(ICAMR 2015)
2015 International Conference on Mechanical Design and Engineering
(ICMDE 2015)
2015 The 2nd International Conference on Physical Science and Technology
(ICPST 2015)
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Doha, Qatar, 2015
*ICAMR 2015 conference proceeding will not be available on conference site, and will be post to
authors’ address after conference.
*ICMDE 2015 conference proceeding will not be available on conference site, and will be post to
authors’ address after conference.
*ICPST 2015 conference proceeding will not be available on conference site, and will be post to
authors’ address after conference.
*One best presentation will be selected from each session, the best one will be announced at the end
of each session and awarded the certificate at the banquet. The winners’ photos will be updated on
SCIEI official website: www.sciei.org.
Best Presentation will be evaluated from: Originality; Applicability; Technical Merit; PPT;
English.
*If you didn’t put a formal photo in your registration from, please take a formal one inch photo.
SCIEI Publication committee
Devices Provided by the Conference Organizer:
Laptops (with MS-Office & Adobe Reader)
Projectors & Screen
Laser Sticks
Materials Provided by the Presenters:
PowerPoint or PDF files
(Files shall be copied to the Conference Computer 10 minutes earlier before each Session)
Duration of each Presentation (Tentatively):
Regular Oral Session: about 10 Minutes of Presentation, including Q&A
Dress code
Please wearing formal clothes or national characteristics of clothing
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Doha, Qatar, 2015
Honorary Chair & Keynote Speaker
Professor (Dr.) K. M. Gupta
Motilal Nehru National Institute of Technology Allahabad, India
About Professor (Dr.) K. M. Gupta
Professor K.M. Gupta was born at Allahabad, India on July 23, 1948. Dr. K.M. Gupta is a Professor in the Department of Applied
Mechanics, Motilal Nehru National Institute of Technology, Allahabad. He has over 38 years of teaching, research and consultancy
experience. He obtained Diploma (with Honours) in Mechanical Engineering, Bachelor of Engineering (Gr. I.E., AMIE) in Mechanical
Engineering, Postgraduation (M.E. with Honours) in 1977, and completed his Doctorate (Ph.D.) degree from University of
Allahabad. Although a Mechanical Engineer but he has also specialised in Automobile Engineering discipline. He has authored 28
books and edited 2 books on Engineering subjects, and a chapter in Scrivener Wiley published ‘Handbook of Bioplastics and
Biocomposites Engineering Applications’. He has also authored 110 research papers in reputed International and National Journals
and Conferences to his credit. Professor K.M. Gupta has presented his research papers in 16 International conferences abroad at
USA, UK, Japan, China, France, Muscat, Bangkok, South Africa, Hongkong etc. He has also chaired 8 International Conferences in
China, Singapore, Dubai, Bangkok etc. He has acted as Editor-in-Chief of ‘The International Journal of Materials, Mechanics and
Manufacturing (IJMMM) Singapore, has edited many International Journals and Conferences. He has worked as reviewer for
various International and National Journals, and has acted as Member of several Editorial Boards also. In recognition of his
academic contributions at International level, Marquis Publication (USA) has included him in the list of ‘World Who’s Who in
Science and Engineering 2007' and ‘Who’s Who in the World 2008'. The International Biographical Centre, a leading research
institute (Great Britain) has also selected him as one of the ‘2000 Outstanding Scientists 2009’ from across the world; and
Rifacimento International Publisher has included his biographical-note in ‘Reference Asia: Asia’s Who’s Who of Men and Women of
Achievement’.
Recipient of many Gold Medals and Prizes for his outstanding career from Diploma to Doctorate (a rare achievement in this
country); he had served as Head of Automobile Engineering Department at the Institute of Engineering and Rural Technology,
Allahabad. He masterminded the development of several laboratories viz. Automobile related Labs, Materials Science Lab.,
Strength of Materials Lab., Hydraulics Lab. etc. at different Institutes/colleges. He was the trail brazier in establishing an Auto
Garage and a Repairing Workshop also.
Dr. K.M. Gupta has undergone several Industrial Trainings at many reputed Industries and Workshops. He is endowed with vast
experience in Curriculum Development activities and consultancy. Earlier, he has served as Dean of Research & Consultancy, Head
of the Applied Mechanics Department at Motilal Nehru National Institute of Technology Allahabad. He has acted as Chairman of
various Research Selection Committees, of Research Project Monitoring Committees and other Administrative Committees of his
Institute and other Universities. He has also served as Chairperson, Community Development Cell (CDC) of MNNIT for several
years.
Presently, Dr. Gupta is teaching Materials Science, Engineering Mechanics, Thermodynamics of Materials, Electrical and Electronic
Materials etc. His research interests are in the fields of Materials Science, Composite Materials, Stress Analysis, Solid Mechanics
etc.
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Doha, Qatar, 2015
Topic: Fabrication and Characterization of Biocomposite using Grewia Optiva Fibre (i.e. Bhimal) Reinforced Polyvinyl Alcohol (PVA)
Abstract: Bhimal fibres are quite a newer kind of bio-degradable fibres. They have never been heard before in literatures from
the view point of their utility as engineering material. These fibres have been utilized for investigation of their properties.
Characterization of this fibre is essential to determine its properties for further use as reinforcing fibre in polymeric, bio-degradable
and other kinds of matrix. With this objective, the fabrication method and other mechanical properties of Bhimal-reinforced-PVA
biocomposite have been discussed. The stress-strain curves and load-deflection characteristics are obtained. The tensile,
compressive, flexure and impact strengths have been calculated.
The results are shown in tables and graphs. The results
obtained are compared with other existing natural fibre biocomposites. From the observations, it has been concluded that the
tensile strength of Bhimal-reinforced-PVA biocomposite is higher than other natural fibre composites. Hence these can be used as
reinforcement to produce much lighter weight biocomposites.
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Doha, Qatar, 2015
Keynote Speaker
Prof. GONG Hao
Dept Mat. Sci & Eng, National University of Singapore
About Prof. GONG Hao:
Dr. Hao GONG is a Full Professor of Materials Science and Engineering at National University of Singapore. He is also the
coordinator of the transmission electron microscopy laboratory at Department of Materials Science and Engineering. His research
interests include transparent oxide conductors and semiconductors (n-type and p-type), energy storage materials and devices
(mainly supercapacitors), energy harvest materials and devices (mainly solar cells), gas sensors, functional thin film and
nano-materials, materials characterization (mainly on transmission electron microscopy and electron diffraction). Dr. Gong
received his B.S. degree in Physics at Yunnan University in 1982. He passed his M.S. courses in Yunnan University, carried out his
M.S. thesis research work at Glasgow University, UK, and received M.S. degree of Electron and Ion Physics at Yunnan University in
1987. He then did his PhD at Materials Laboratory at Delft University of Technology, the Netherlands, and obtained PhD degree
there in 1992. He joined National University of Singapore in 1992, and is currently full professor at Department of Materials
Science and Engineering. He has published about 200 refereed papers in major international journals and a few US patents. He
has delivered several invited talks at international conferences. He has been chairman or committee member of several
international conferences, and editor of special issues of some journals.
Topic: coming soon
Abstract:
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Doha, Qatar, 2015
Keynote Speaker
Prof. Donato Firrao
Politecnico di Torino, Italy
About Prof. Donato Firrao:
Prof. Donato FIRRAO, born in Bari, Italy, in 1944, got his Laurea in Chemical Engineering at the Politecnico di Torino, Turin, Italy,
in 1968 and his M.Sc. in Metallurgical Engineering at The Ohio State University, Columbus, OH, USA, in 1970, on a Fulbright
scholarship. Assistant Professor of Ferrous Extractive Metallurgy since 1968 and Lecturer of Chemistry at the Politecnico di Torino
since 1971, Associate Professor of Technology of Metallic Materials there since 1983, he became Full Professor in the same subject
always at the same university in 1986. He has also been visiting fellow at the OSU MSE Dept. in 1978-79. Was named
Distinguished Alumnus of the OSU in 2003. Author of more than 220 papers primarily in the fields of Physical and Mechanical
Metallurgy and Surface Heat Treatments, he is a member of AIM, ASTM, ESIS, TMS-AIME and of the Turin’s Academy of Sciences.
He is Fellow of ASM International. Founding Partner of the Italian Fracture Group (IGF) and its Secretary since its establishment in
1982, he became its President between 1988 and 1994. Co-Chairman of the ESIS Technical Committee I (Elasto-Plastic Fracture
Mechanics) dal 1987 al 1996. He has been President of the Federation of European Materials Societies (2000-01) and is, since
1994, the President of the Board of Trustees of the Collegio Universitario di Torino (a private non profit university student housing
Foundation) as well as, from 2005 to 2012, Dean of the 1st College of Engineering at the Politecnico di Torino. Expert in "failure
analysis", he has acted as technical advisor to the judge in national and international relevant trials (such as, for instance, on the
Ustica aircraft crash, on the Mattei affair, on the Sgrena/Calipari case, etc.).
Topic: Blunt V-notch brittle fracture: An improved Finite Fracture Mechanics approach
Abstract: The coupled Finite Fracture Mechanics (FFM) criterion is applied to investigate brittle fracture in rounded V-notched
samples under mode I loading. The approach is based on the contemporaneous fulfilment of a stress requirement and the energy
balance, the latter being implemented on the basis of a recently proposed analytical expression for the stress intensity factor.
Results are presented in terms of the critical crack advance and the apparent generalized fracture toughness, i.e. the unknowns
related to the system of two equations describing the FFM criterion. A validation of the theory is performed by employing varying
root radius notched, as-quenched, AISI 4340 steel specimens fracture results.
Keywords: blunt V-notch, brittle fracture, intergranular fracture, Finite Fracture Mechanics
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丨
Opening Remarks
Jan. 8
Professor (Dr.) K. M. Gupta
8:30a.m-8:35a.m
Motilal Nehru National Institute of Technology Allahabad,
India
Plenary Speech I
Prof. Donato Firrao,
Jan. 8
8:35a.m-9:20a.m
Politecnico di Torino, Italy
Blunt V-notch brittle fracture: An improved Finite Fracture Mechanics
approach
Plenary Speech II
Venue
Ras Laffan
Jan. 8
Prof. GONG Hao
9:20a.m-10:05a.m
Dept Mat. Sci & Eng, National University of Singapore
Coming soon
Jan. 8
Coffee Break & Group Photo
10:05a.m-10:25a.m
Plenary Speech III
Professor (Dr.) K. M. Gupta
Jan. 8
Motilal Nehru National Institute of Technology Allahabad,
10:25a.m-11:10a.m
India
Fabrication and Characterization of Biocomposite using Grewia
Optiva Fibre (i.e. Bhimal) Reinforced Polyvinyl Alcohol (PVA)
Jan. 8
Session 1- General Mechanical Engineering and Applied
11:20a.m-12:30p.m
Mechanics-6
Lunch Olives Restaurant 12:30pm-13:30pm
13:30pm-16:00pm
Venue
Jan. 8
Ras Laffan
13:30p.m-19:00p.m
Session 2- Composite materials and alloy
materials & Civil Engineering Materials-14
16:00pm-16:20pm
Coffee Break
Session 3-Civil Engineering Materials &
16:20pm-19:00pm
General Mechanical Engineering and
Materials Science-15
Dinner Olives Restaurant 19:00pm-20:00pm
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Doha, Qatar, 2015
January 8th (Tursday Morning)
Invited Speech
Venue: Ras Laffan
Chair: Professor (Dr.) K. M. Gupta
Motilal Nehru National Institute of Technology Allahabad, India
Time: 8:30 a.m-11:10 a.m
Opening Remarks
Jan. 8
Professor (Dr.) K. M. Gupta
8:30a.m-8:35a.m
Motilal Nehru National Institute of Technology Allahabad,
India
Plenary Speech I
Jan. 8
8:35a.m-9:20a.m
Prof. Donato Firrao,
Politecnico di Torino, Italy
Blunt V-notch brittle fracture: An improved Finite Fracture Mechanics approach
Plenary Speech II
Jan. 8
Prof. GONG Hao
9:20a.m-10:05a.m
Dept Mat. Sci & Eng, National University of Singapore
Coming soon
Jan. 8
10:05a.m-10:25a.m
Coffee Break & Group Photo
Plenary Speech III
Professor (Dr.) K. M. Gupta
Jan. 8
Motilal Nehru National Institute of Technology Allahabad,
10:25a.m-11:10a.m
India
Fabrication and Characterization of Biocomposite using Grewia Optiva
Fibre (i.e. Bhimal) Reinforced Polyvinyl Alcohol (PVA)
*The Group Photo will be updated on the conference webpages and SCIEI official website: www.sciei.org
**One best presentation will be selected from each session, the best one will be announced and awarded
the certificate at the end of each session, and the winners’ photos will be updated on SCIEI official website:
www.sciei.org.
***Best Presentation will be evaluated from: Originality; Applicability; Technical Merit; PPT; English.
**** Please arrive at the conference room 11 minutes earlier before the session starts, copy your PPT to
the laptop.
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Doha, Qatar, 2015
January 8th (Thursday Morning)
Oral Presentations- Schedule
SESSION – 1- General Mechanical Engineering and Applied Mechanics-6
Venue: Ras Laffan
Session Chair: Prof. Adrian Olaru
University Politehnica of Bucharest, Romania
Time: 11:20a.m-12:30p.m
Nonlinear Multiresponse Parameter Estimation using Simplex Optimization Method
Mohammad A. Al-Saleh and Abdirahman Yussuf
Kuwait Institute for Scientific Research, Kuwait
Abstract
Polyolefin molecular architectures are designed according to customer needs and demands. Hence, it is
A037
essential to determine the catalytic behavior that gives the polymer the characteristics it needs to meet
the market requirements. Today most of the industrial polyolefin production depends on
multiple-site-type catalysts such as Ziegler-Natta catalysts. In this work a methodology to estimate
parameters for polyolefin multiple-site-type catalysts was presented. The sequence length distribution
data were simulated using Zeroth-order and First-order Markovian models. These simulated data were
used to test the robustness of the optimization method. The optimization method used was able to
retrieve and comprehend the proper probabilistic models and provide acceptable polymerization
parameters estimates.
Investigation of Thermal and Rheological Properties of Polypropylene and Montmorillonite (MMT)
Nanocomposites
Abdirahman Yussuf, Mohammad Al Saleh and Salah Al Enezi
Kuwait Institute for Scietific Research, Kuwait
Abstract
A038
The performances of PP/MMT nanocomposite (70μm thick films), in terms of thermal and rheological
properties were investigated. A twin-screw extruder was used to compound PP, MMT, compatibilizer, and
extruded nanocomposite films were collected for test. All results were compared and the influence of
MMT contents on the final properties were observed and reported. The thermal properties of PP had
improved by increasing MMT content from 0-3 phr. However at 4 phr thermal stability of the
nanocomposite had slightly dropped. In terms of rhelogical properties, the addition of MMT to the PP
blend increased the complex viscosity of the nanocomposites, particularly at low frequency regions.
Anti Newton - Refutation of The Constancy Of Newton's Gravitational Constant G
Mr. Ilija Barukčić
C0001
Horandstrasse, Jever, Germany
Abstract
In general, the value of Newton's gravitational constant G has one of the longest history of
measurements in physics, but a definite value is still not in sight. Surprisingly, in spite of the fundamental
importance of the Newton's universal gravitational constant G, the more the precision of measurements
of Newton's constant G increased, the more the disparity of the measured value of Newton's constant G
increased. Different groups of experimentalists are repeatedly obtaining conflicting results for the exact
value of Newton's constant G. Is this high degree of uncertainty of Newton's constant G a result of
experimental errors or is the same at the end not a constant at all? The purpose of this publication is to
refute the constancy of Newton's constant G by the proof that Newton's gravitational constant G is not a
constant.
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C0002
Anti Einstein - Refutation Of Einstein's General Relativity Theory
Mr. Ilija Barukčić
Horandstrasse, Jever, Germany
Abstract
More than ninety years after publication, Einstein's general relativity theory is still a highly successful
theory of gravitation.
Meanwhile, general relativity theory has passed a lot of observational and
experimental tests, opportunities to test the validity of general relativity are increasing. Yet more and
more, some recent observational data (dark energy) indicate the need to test the logical consistency of
Einstein's general relativity theory. The present investigation will refute Einstein's general relativity theory
by the proof that Einstein's general relativity theory is not a complete physical theory.
Generalization of Faraday’s Law of Induction: Some Examples
Prof. Sami M. AL-Jaber
An-Najah National University, Palestine
Abstract
A general form of the induced electromotive force due to time-varying magnetic field is derived. It is
C3004
shown that the integral form of Faraday’s law of induction is more conveniently written in the covering
space. The method used in this work relies of finding the modified magnetic field each time the circular
path is traversed. This amounts to an additional time derivative of the magnetic field. Therefore, the
induced electromotive force comes from the sum of all contributions coming from all winding numbers.
th winding number to the
time- derivative of the magnetic field. It is also shown that the
higher order terms are modulated by the self-inductance and resistance of the circuit. Some illustrative
examples for time-dependent magnetic fields are presented: Sinusoidal, exponential, and step-function
fields. In each of these examples, it is shown that the induced electromotive force could be written in
closed analytical form that depends (among other things) on the ratio between the self-inductance and
resistance of the circuit. Furthermore, in all these examples it is demonstrated that our result for the
induced electromotive reduces to the well-known result in the limit of the ratio of the self-inductance and
resistance goes to zero. The conclusion of this work shows that Maxwell’s equation of Faraday’s law of
induction can be written in a more general form in the physical space.
Assisted Research of the Robots Inverse Kinematics Problem
Prof. Adrian OLARU, Serban OLARU, Niculae MIHAI
University Politehnica of Bucharest, Romania
Abstract
D001
Solving of the robots inverse kinematics problem by obtaining the minimum of the space trajectory
errors, is very difficult because there are many variable parameters (internal robots coordinates) and
many redundant solutions (difference between the number of degree of freedom and number of scalar
equations). The paper show the state of art in this field of the robots inverse kinematics, some of the
graphic- analytical used methods, the proposed assisted method solving of the inverse kinematics with
the goal to minimize the final end-effecter trajectory errors, by optimizing the distance between the
end-effecter final position and the imposed target and the proper virtual LabVIEW instrumentation used
in the assisted research. The proposed method was applied to one case of the arm type robot structure
and contents by obtaining the inverse kinematics solutions and after verify them by applying the proper
forward kinematics mathematical model of the used robot with proper virtual LabVIEW instrumentation.
The proposed method used the modified Cycle Coordinate Descent Method (CCDM) coupled to the
proper Neural Network Sigmoid Bipolar Hyperbolic Tangent (SBHTNN). The presented method is general
and can be used in all other type of robots and in all other conventional and unconventional space curves.
12:30 pm-13:30 pm
Lunch-Olives Restaurant
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Doha, Qatar, 2015
January 8th (Thursday Afternoon)
Oral Presentations- Schedule
SESSION – 2- Composite materials and alloy materials & Civil Engineering Materials-14
Venue: Ras Laffan
Session Chair: Prof. Donato Firrao,
Politecnico di Torino, Italy
Time: 13:30 pm-16:00 pm
Mechanical and Tribological Behavior of Bio Polymer Matrix Composites for Biomedical Prosthesis
Applications
Syed Zameer, and Prof. Mohamed Haneef
Ghousia College of Engineering, Ramanagaram-562159, Karnataka State, India
Abstract
Due to limitations of Conventional metallic biomaterials an attempt is made to develop a new hybrid
polymer matrix composite for load bearing applications of Hip joints in the human body. Ultra high
A1004
molecular weight polyethylene matrix material was blended with 50 wt% of short E-glass fibres and
TiO2 particles with varying percentage of reinforcement, using injection moulding machine. Fabricated
composites specimens were subjected to tensile strength test, Fatigue test, SEM, Wear analysis test
and In vivo Biocompatibility test to evaluate mechanical and tribological properties, required for bone
joints load bearing applications. The maximum tensile strength of 41.5 MPa and young’s modulus of 7.5
GPa is obtained. The behavior of S-N curve obtained after the test is linear in nature, which leads to
failure at 105 cycles for the fabricated composite specimen. Also it reveals that fracture is due to brittle
failure. The wear mechanism of composite specimen is, because of abrasion. Density of composite
specimens was increased after dipping in the simulated body fluid solution.
Properties of the Ti Void Metal Composites Prepared with Saccharose as a Space Holder and Coated by
Hydroxyapatite
Dr. Grzegorz Adamek, Daniel Andrzejewski, and Jaroslaw Jakubowicz
Poznan University of Technology, Institute of Materials Science and Engineering, M. Sklodowska-Curie 5
Sq, 60-965 Poznan, Poland
Abstract
In this paper hydroxyapatite biomimetic deposition on Ti void metal composites (Ti-VMC) have been
shown. The Ti-VMC were prepared using saccharose (sugar crystals) as a space holder material that
forms voids around the Ti scaffold. The Ti (100 and 325 mesh) with sugar (about 0.7−0.9 mm) particles
A1005
were mixed together with different Ti/sugar ratio and uniaxially pressed. Then the sugar particles were
dissolved in water, leaving mechanically bonded Ti particles, forming a metal scaffold. The titanium
scaffolds were sintered at 1300°C, which lead to formation the Ti-VMC with voids of diameter of up to
0.9 mm. Because different Ti/saccharose ratio was applied, the Ti-VMC have been made with 50, 60
and 70% porosity. On the as-prepared Ti-VMC the hydroxyapatite (HA) was deposited using
mineralisation procedure in Kokubo SBF (simulated body fluid). The Ti-VMC were kept in SBF for time
from 7 up to 28 days. Finally the scaffolds were covered by layer of HA showing good corrosion
resistance. The mechanical tests show, that most optimal property for implant applications have
samples of 50% porosity, made from 100 mesh Ti. The scaffold of 50% porosity states a good
background for implant applications.
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An Experimental Investigation on Specific Heat Capacity and Enthalpy of Al 6061-Sic-Gr Hybrid Metal
Matrix Composites Using Differential Scanning Calorimetry
Assoc. Prof. S A Mohan Krishna, T N Shridhar, and L Krishnamurthy
Department of Mechanical Engineering, Vidyavardhaka College of Engineering, Mysore-570002,
Karnataka, India
A3019
Abstract
Metal matrix composites are regarded to be one of the most predominant classifications in composites.
The thermal characterization of metal matrix composites using Differential Scanning Calorimetry is a
resourceful technique for the determination of heat flow distribution, specific heat capacity and
enthalpy. The measurement of the thermal properties of materials is fundamental for the better
understanding of the thermal design. Differential Scanning Calorimeter (DSC) is a technique that
measures the difference in the heat flow to a sample and to a reference sample as a direct function of
time or temperature under heating, cooling or isothermal conditions. In the present research,
evaluation of specific heat capacity and enthalpy are accomplished for Al 6061, Silicon Carbide and
Graphite hybrid metal matrix composites from room temperature to 300°C based on heat flow
response. Based on endothermic and exothermic processes, the heat flow can be shown clearly
depending on heating rate and gradual variation in temperature. The heat flow and heating rate are
beneficial in the estimation of specific heat capacity for different percentage compositions of the hybrid
composites.
The Role of Twinned and Detwinned Structures on Memory Behaviour of Shape Memory Alloys
Prof. O. Adiguzel
Firat University, Turkey
Abstract
Shape memory alloys have a peculiar property to return to a previously defined shape or dimension
when they are subjected to variation of temperature. Shape memory effect is facilitated by martensitic
transformation governed by changes in the crystalline structure of the material. Martensitic
A001
transformations are first order lattice-distorting phase transformations and occur with the cooperative
movement of atoms by means of lattice invariant shears in the materials on cooling from high
temperature parent phase region.
The material cycles between the deformed and original shapes on cooling and heating in reversible
shape memory effect. Thermal induced martensite occurs as twinned martensite, and the twinned
martensite structures turn into detwinned structures by deforming the material in the martensitic
condition. Deformation of shape memory alloys in martensitic state proceeds through a martensite
variant reorientation. The deformed material recovers the original shape on first heating over the
austenite finish temperature in reversible and irreversible shape memory cases.
Meanwhile, the parent phase structure returns to the twinned structure in irreversible shape memory
effect on cooling below to martensite finish temperature and to the detwinned structure in reversible
shape memory effect. Therefore, the twinning and detwinning processes have great importance in the
shape memory behaviour of the materials.
Copper based alloys exhibit this property in metastable β-phase region, which has bcc-based structures
at high temperature parent phase field, and these structures martensitically turn into layered complex
structures with lattice twinning following two ordered reactions on cooling.
Effect of Cutting Parameters on the Quality of the Machined Surface Of Cu-Zn-Al Shape Memory Alloy,
SMA
A.I.O Zaid and Assoc. Prof. S. M. A. Al-Qawabah
A015
Tafila Technical University, Jordan
Abstract
Shape memory alloys (SMAs) are now widely used in many industrial and engineering applications e.g.
in aircrafts, space vehicles, robotics and actuators. However the available literature reveals that little or
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Doha, Qatar, 2015
no work is published on the machinability of these alloys. In this paper, the effect of the main cutting
parameters namely: cutting speed, depth of cut and feed rate on the surface quality of the machined
surface of the Cu-Zn-Al shape memory alloy both in the cast and after direct extrusion using a CNC
milling is investigated. The cutting speed was varied from 750 to 2000 rpm , the depth of cut was varied
from 1 to 4 mm and the feed rate was varied from 100 to 250 mm/min. Furthermore, the general
microstructure, the mechanical behavior and hardness of the Cu-Zn-Al shape memory alloy both in the
cast and after direct extrusion are determined and discussed. It was found that the best achieved
surface quality in this SMA, machined within the different investigated cutting conditions is 0.13 microns
at cutting speed of 750 rpm, 1 mm depth of cut and 150 mm/min. feed rate, which is better than the
surface quality achieved in other materials at the same cutting conditions.
Effect of Addition of Some Grain Refiners to Zinc-Aluminum 22, ZA22, Alloy on its Grain Size,
Mechanical Characteristics in the Cast and after Pressing by the Equal Channel Angular Pressing, ECAP
Prof. A.I.O Zaid, Jehad A. S Alkasasbeh and S M A Al-Qawabah
Applied science university, Jordan
Abstract
In this paper, the effect of addition of some grain refiners namely: molybdenum, titanium and
A016
titanium+boron to zinc-aluminum 22%, ZA22, alloy on its microstructure and mechanical
characteristics is investigated in two conditions one in the cast condition and the other after pressing by
the equal channel angular pressing, ECAP. Recently the ECAP process has been used to produce severe
plastic deformation. It was found that addition of any of these elements to ZA22 alloy resulted in grain
refinement of its structure both in the cast and after pressing by the ECAP conditions, being more
pronounced after pressing by ECAP. The maximum decrease was
%. Furthermore, it resulted in
enhancement of its mechanical strength at, indicating softening of the alloy. Regarding the effect on its
hardness, it decreased by th addition of either Mo or Ti+B. at any rate of Mo addition.
Synthesis of Ultra High Strength Fe Base Ferritic Alloys Produced by Mechanical Alloying and
Consolidated Via Hot Equal Channel Angular Extrusion
Asst. Prof. Hasan Kotan and Kris A. Darling
Necmettin Erbakan University, Dere Aşıklar Mahallesi, Demet Sokak, Meram, 42140 Konya, TURKEY
AP003
Abstract
Consolidation of nanocrystalline materials produced by mechanical alloying has been a challenge in the
past, due to the extreme hardness of the as-milled particulates, without degradation in the physical
properties such as mechanical properties. Recent demonstrations of novel consolidation method, so
called the equal channel angular extrusion or ECAE, involving temperature, high shear and high
pressure have shown promise for bonding high strength particulate materials. Here, we will report the
ability of multi-pass high temperature ECAE to produce fully dense and well-bonded high strength bulk
Ferritic alloys from thermally stabilized nanocrystalline Fe-Ni-Zr powder precursors. The microstructural
evolution as a function of processing temperature will be investigated in terms of grain growth and
second phase formation. The microhardness, shear and compressive tests will be used to evaluate the
mechanical resistance of the consolidated samples at room temperature and at high temperatures. Our
initial investigations have revealed that the consolidated alloys demonstrate an extremely high strength
at moderately high temperatures as compared to modern day high strength steels.
Investigation on the Effect of Geometrical Shape of Cold Direct Extrusion on Commercially Pure
Aluminum Alloyed by 4% Cu
Prof. A.I.O Zaid, Jehad A. S Alkasasbeh and S M A Al-Qawabah
A023
Applied science university, Jordan
Abstract
Al-4% Cu alloys are now widely used in many engineering applications especially in robotic, aerospace
and vibration control area. The main problem arises from the weakness of their mechanical
characteristics. Therefore, this study is directed towards enhancing the mechanical properties through
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Doha, Qatar, 2015
severe plastic deformation, hence it is anticipated that cold direct extrusion process may enhance their
mechanical behavior. This was performed through using three different cross sectional dies namely;
circular, square, and rectangular that have the same cross sectional area. The general microstructure,
microhardness, and compression tests were performed on each specimen produced before and after
extrusion for Al and Al-4% Cu alloy. It was found that the maximum enhancement in mechanical
behavior was achieved after extrusion through the rectangular shape for both Al and Al-4% Cu alloy at
0.2 strain by 143% for Al and 134.8% for Al-4%Cu wt.; similarly the hardness of both of them was
improved where a maximum of 141.8 % was obtained for Al-4% Cu wt. in case of rectangular cross
sectional die.
Utilization of Geosynthetic Material Interfaces for Reduction of Cyclic Motion Induced Accelerations
Asst. Prof. Dr. Volkan Kalpakcı
Hasan Kalyoncu University, Turkey
A3018
Abstract
The geosynthetic materials are extensively used in a wide range of applications in civil engineering. In
this study, a nonwoven high strength geotextile which is generally utilized as a reinforcing material for
earth structures and a ultrahigh molecular weight polyethylene (UHMWPE) geomembrane (generally
used to seal the inner face of toxic liquid tanks against leakage) are used together beneath structures
for seismic isolation purposes. The dynamic interface properties of the surface formed between these
two materials have been tested on small scale models by shaking table tests. The results were
impressive such that the accelerations transferred to the superstructure were significantly reduced.
Also, it was observed that the materials used during the research had almost no abrasion at the end of
a series of experiments which revealed that the tested materials could be used for repetitive dynamic
loadings.
Modeling the Fuel Rich Combustion of Liquid Ethanol and Liquid Oxygen
Leonardo Kist, Assoc. Prof. Luizildo Pitol-Filho
Centro Universitário Católica de Santa Catarina, Brazil
Abstract
In aerospace engineering, combustion requires optimization, in order to get the maximal advantage of
the energy of reagents and products. Adiabatic flame temperature and composition of combustion
D009
products may be calculated by a combination of enthalpy and species balances, by considering the
combustion and dissociation reactions. The present paper reports the combustion process between the
liquid ethanol and liquid oxygen (LOX), in a fuel rich mixture. It considers the calculation of adiabatic
flame temperature and dissociation using a simplified method, and finally compare results to those
obtained by a complete dissociation model simulated by using a freeware numerical code. For adiabatic
flame temperatures, the more significant discrepancies appeared at low oxygen to fuel ratios, where
dissociation reactions are more expected to happen.
Notch Effect on J and Amplification of Anisotropic Stress Concentration Factor in a Laminated Plate
Subjected to Tensile Load
Prof. D. Ouinas, B. Bachir Bouiadjra, A. Albedah, and M. Sahnoun
University of Abdel-Hamid Ibn Badis de Mostaganems, Algeria
Abstract
Several analytical, numerical and experimental techniques are available to study the stress
A012
concentration around the notches. The stress distribution in a rectangular composite laminated plate
with a central notch was studied using the finite element method. The objective of this study is to
analyze the fibre orientation effect on the variation of stress concentrations at the notch root and the
J-integral at the crack-tip emanating from this notch in a plate subjected to tensile loading. The results
show that the anisotropic stress concentration factor can be higher or lower than that of a
homogeneous material. The area of maximum normal and tangential stresses could shift with fibre
orientation with respect to the loading axis. The interaction effect between a crack located on the
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Doha, Qatar, 2015
ligament of the plate and the circular notch of radius is considered.The results indicate that fold
sequence influences appreciably the acceleration or the retardation of the crack propagation.
Transport and Accumulation of Redox Compounds at the Buried Interfaces of Plasticized Membrane
Electrodes
Dr. Manzar Sohail, Roland De Marco, Marcin Pawlak, Eric Bakker
Center of Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Saudi Arabia
Abstract
AP005
The migration and accumulation of redox species at the buried interfaces between substrate electrodes
and semi-rigid and plasticized polymeric membranes has been studied using synchrotron radiation
X-ray photoelectron spectroscopy (SR-XPS) near edge X-ray absorption fine structure (NEXAFS), cyclic
voltammetry (CV), chronoamperometry and electrochemical impedance spectroscopy (EIS). Ferrocene
modified poly(vinyl)chloride (FcPVC), ferrocene (Fc) and tetracyanoquinodimethane (TCNQ) based
plasticized polymer membrane electrodes were studied. This study provides the first direct evidence
that, irrespective of the size of the size of the electrochemically active molecule, the redox active
species migrate to and reacts to form an association complex at the surface of the electrode within the
plasticized polymer membranes. When electrolysis is carried out for a sufficient period of time, redox
species could not be detected at the outer surface layers of the electrode. The highest concentration of
the redox specie was found
at the electrode substrate with a gradual decrease towards the outer surface. It is anticipated that this
new understanding of the behavior of redox species within the plasticized polymers will have important
ramifications for the preparation of innovative and microscale electrochemical devices based on
controlled and tunable layering of electromaterials at the substrate electrode
Numerical Modelling of the Interaction Macro–Multimicrocracks in a Pipe under Tensile Stress
Dr. M. Sahnoun, D. Ouinas, and B. Bachir Bouiadjra
1LMNEPM, Department of Mechanical Engineering, University Abdelhamid Ibn Badis of Mostaganem,
27000-Algeria
Abstract
In this paper, the evaluation of the SIFof a macrocrack in interaction with one or several microcracks in
a material containing a geometrical defect was investigated. Several configurations were considered in
A3030
order to apprehend the mechanisms induced by the interaction effect and in particular the effects of
reduction and/or amplification of the stress field between macro and single or multiple microcracks.
The obtained results show that, macro–microcrack spacing is an important parameter if the microscopic
crack is relatively close to the macrocrack-tip. The macrocrack has the tendency to accelerate as it
propagates towards the microcrack. When the relative distance characterizing this spacing is higher
than 0.3, the interaction effect can be neglected and the SIF remains unchanged for both defect types.
When this ratio is lower than 0.3, the interaction between the two defects becomes significant and the
stress intensity factor at the macrocrack tip strongly increases.
Plastic Waste in Cement Concrete, LDPE and PVC Introduction Effect
M’hammed MERBOUH
FIMAS Laboratory, Department of Civil Engineering, University of Bechar, BP417, Algeria
Abstract
We checker huge quantities of plastic with various forms and types. Major problems caused by these
A2006
wastes in nature, inside the urban areas and countryside, impose a concern of increasing difficulties for
reasons of hygiene and environment
Cement concrete is a relatively inert and durable material, compact and waterproof, which can prevent
contamination of the environment by living the harmful effects of plastic.
In this context it was considered appropriate to include in concrete composition the elements of plastic
waste (bag: LDPE) and (bottle: PVC) as a technique for recovery and reuse it’s in the cost. It is a simple
and clean procedure to remove these dangerous elements and participate to preserve the nature.
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Doha, Qatar, 2015
Results showed the possibility of using these types of plastic at ambient condition, as a substitution of
aggregates, with a slight decrease in compressive strength on the percentage of substitution and an
optimal increase in tensile resistance associated with a substantial gain in weight and a high removal
rate, especially for PVC.
These materials may be intended for the manufacture of components requiring less performance (small
works, architectural concrete and decorative elements of the interior, filling, surface coverage and
roof.).
Coffee Break
16:00 pm-16:20 pm
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Doha, Qatar, 2015
January 8th (Thursday Afternoon)
Oral Presentations- Schedule
SESSION – 3- Civil Engineering Materials & General Mechanical Engineering and Materials
Science-15
Venue: Ras Laffan
Session Chair:
Time: 16:20-19:00
Microstructural Characterization of Plasma Sprayed Ni-5wt.%Al coatings using Rietveld Refinement
F. Chouit, M. K. Al Turkestani, Asst. Prof. A. Loucif, M. Guerioune, and A. Drici
Qassim University. King of Saudi Arabia, Qassim
Abstract
This work is focused on the study of nickel aluminide (Ni-5wt%Al) microstructure deposited on A37 steel
substrates. The structure of the material was investigated by using Rietveld refinement of X-ray
A3012
diffraction. The coatings were elaborated by the plasma spray technique. In such technique, the initial
material is melted from its powder form by using a 20000°C flame prior to spraying it on the substrate.
Two types of substrates were used in this work; the first one was a non-heated substrate, whereas the
second type was a heated substrate to 150°C.
It was found that the coatings of nickel aluminide
presented a formation of new phases such as Ni3Al and NiO. The formation of NiO phase is due to the
oxidation of nickel during spray operation, which took place in the air. Furthermore, the surface of the
coating deposited on the heated substrate is less rough than that of the coating deposited on the
non-heated substrate
2-(Methacryloyloxyethyl) Trimethyl Ammonium Chloride Grafted onto Natural Rubber in Latex State
Assoc. Prof. Pairote Klinpituksa, Nurhayatee Chekmae and Salinee Borthoh
Faculty of Science and Technology, Prince of Songkla University, Thailand
Abstract
The grafting of polar vinyl monomers onto natural rubber is usually investigated to modify specific
properties
A036
of
natural
rubber.
The
aim
of
this
research
was
to
graft
copolymerize
2-(methacryloyloxyethyl) trimethyl ammonium chloride (MAETAC) onto natural rubber (NR), using
cumene hydroperoxide (CHP) and tetraethylene pentamine (TEPA) as a redox initiator system. The
effects of the initiator system, the monomer, and the reaction temperature and time on grafting were
investigated. The grafted product was characterized by FTIR spectrophotometry. The grafting tendency
was determined by using the relative absorbance ratio of A 1725/A842, which compares the C=O stretching
in MAETAC with the =CH out-of-plane bending in natural rubber moieties. Near optimal grafting was
obtained with CHP and TEPA both at 0.15 phr, monomer at 20 phr, reacted at 65oC for 120 minutes. The
grafting percentage of NR-g-MAETAC was 6.10 as determined by ATR-FTIR.
Adobe Bricks: The Best Eco-Friendly Building Material
A3029
Dr. Djamil Benghida
Department of Architecture, School of Design & Creative Technology, Dong-A University, 840,
Hadan2-Dong, Saha-Gu, 604-714 Busan, South Korea
Abstract
Durable, renewable, and affordable are the three characteristics of the adobe brick, one of the widely
used construction material in human civilization, but is always neglected.
Traditionally, price has been the foremost consideration when comparing similar materials or materials
designated for the same function. That is why by the post-war period, the concrete was adopted as a
universal building material in response of the massive housing demand. The intergovernmental
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Doha, Qatar, 2015
concerns never took into consideration both the sustainability factor and the cultural one, not until the
1990s when research on climate change expanded and the sustainable development took an important
place in the different academic cross fields: engineering, biology, technology and architecture. The main
focus by then was the reduction the CO2 gas emissions emitted by the building sector which is now
approximately 30% of the global energy-related. Researchers are focusing on creating a completely new
green eco-material an alternative to the concrete, but in this paper, I will demonstrate why is it worth to
reinvigorate centuries-old eco-construction material. Adobe bricks are currently the best choice to built
affordable housings in response to the chronicle demand. Not only they have a track record that makes
their thermal mass performance easier to evaluate, but also they can last 400 years or more when
properly maintained. Comparatively, new technologies require testing over time to determine their
long-range effectiveness.
Ultrananocrystalline Diamond/Amorphous Carbon Composite Films Prepared by Laser Ablation of
Graphite in Nitrogen and Hydrogen Atmosphere
Dr . Sausan Al-Riyami and Tsuyoshi Yoshitake
Department of Mathematics and Science, German University of Technology in Oman, Barka, Sultanate
of Oman
Abstract
Nitrogenated ultrananocrystalline diamond/hydrogenated amorphous carbon composite films were
A3014
prepared in hydrogen and nitrogen mixed-gas atmospheres by pulsed laser deposition using graphite
targets. The electrical conductivity in n-type conduction remarkably increase at room temperature with
an increase in the nitrogen content. In the nitrogen content range from 7.9 to 10.4 at.%, the electrical
conductivity is dramatically decreased and this accompanied by the disappearance of diamond grains in
the films. Grain boundaries owing to the existence of diamond grains embedded in UNCD/a-C:H films,
which is structural specific to UNCD/a-C:H, should play a significant role in the large electrical
conductivity enhancement by nitrogen doping. The X-ray photoemission and near-edge X-ray
fine-absorption spectroscopic measurements could not detect an evident difference in the spectra that
explain the sudden irregular change in the electrical conductivity
The power of in situ characterization techniques in Heterogeneous Catalysis: A case study of Deacon
reaction
Dr. R. Farra, D. Teschner, M.G. Willinger, R.Schlögl, and L. Szentmiklósi
Abstract
Fritz Haber Institute of the Max Planck Society, Departament of Inorganic Chemistry, Faradayweg 4-6,
14195 Berlin, Germany. The conventional approach of characterizing solid catalysts under static
conditions, i.e., before and after reaction, does not provide sufficient insight on the physicochemical
processes occurring under dynamic conditions at the molecular level. Hence, the development of in situ
characterization techniques with the potential of being used under relevant catalytic reaction conditions
is highly desirable. In situ IR- and XPS spectroscopies are considered as the most informative and
AP009
powerful techniques in this field, but their application is restricted in cases where high pressures (XPS)
or high temperatures (IR) are required. In situ Prompt Gamma Activation Analysis (PGAA) is not
restricted by temperature and pressure requirements. It is based on the radiative neutron capture of
nuclei, followed by the emission of energetically specific prompt γ radiation. The detection of the
emitted radiation enables in turn the identification of the reacting nuclides; furthermore the intensities
are proportional to their amount in the analyzed sample. All elements (with exception of He) are capable
absorbing a neutron, and hence to release this binding energy in the form of γ radiation. PGAA is a
rapidly developing chemical analytical technique [1] that enables us experimentally to assess the
coverage of surface species under catalytic turnover and correlate these with the reactivity. Here we
show how a combination of different in situ and ex situ characterizations provide relavant and in –depth
mechanisitic insights for the the catalytic HCl oxidation (Deacon reaction) over bulk and doped ceria
catalysts.
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Doha, Qatar, 2015
Interfacial and Demulsification Properties of Janus Type Magnetic Nanoparticles
Mr. Nisar Ali, Zhang Qiuyu,Zhang Baoliang,Wajid Zaman,Sarmad Ali, and Hepeng Zhang
Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education, School of Science,
Northwestern Polytechnical University, Xi’an710072, China
Abstract
Water-in-oil emulsions are formed during crude oil production. Some natural surfactants (asphaltenes)
aggregates are known to form viscoelastic film preventing coalescence of emulsified water droplets.
The present research work investigates the interfacial properties and demulsifying capacity of Janus
A2002
type magnetic nanoparticles. Poly (methylmethacrylate-acrylicacid-divinylbenzene) iron oxide Janus
nanoparticles with Interfacially active P(MMA-AA-DVB) block copolymer and iron oxide (magnetic)
shows excellent interfacial and magnetic properties. Experiments performed at the oil-water interface
indicates that Janus particles adsorb at the oil - water interface and separate the emulsified water from
the external magnetic field. The external magnetic play important role demulsification of magnetically
tagged emulsified water droplets, producing smaller volumes of sludge and decrease the hydrocarbon
loss to waste aqueous phase. The chemical bonding of interfacially active P(MMA-AA-DVB) grafted with
magnetic nanoparticles and the magnetic property of P(MMA-AA-DVB)/Fe3O4 allowed the used Janus
nanoparticles to be readily recycled by magnetic separation and regenerated by solvent washing.
A Comparison Study of Bonded Composite Repairs of Through-Wall Cracks in Pipes Subjected to
Traction, Bending Moment and Internal Pressure
Fayçal Benyahia, Abdulmohsen Albedah, Prof. Bel abbes Bachir Bouiadjra
University of Sidi Bel abbes, Algeria
Abstract
In this study, a finite element analysis of the crack repair with composite wrap of circumferential
through cracks in pipes subjected to bending moment is presented. Also, the evaluation of the
A009
long-term performance of composite repair systems has been addressed. The stress intensity factor is
utilized as a fracture criterion Finally, an attempt was made to provide industry with an overview of the
current state of the art in composite repair technology and how the integrity of pipeline systems is being
restored using composite materials. The obtained results show that the presence of the bonded
composite repair reduces significantly the stress intensity factor, which can improve the residual fatigue
life of the pipe. However, The main disadvantage of the technique of bonded composite repair in pipe
is the impossibility to bond double sided composite wrap in order to equilibrate the stress transfer
between the internal and external crack tip
Modeling of Sheet Carrier Density, DC and Transconductance of Novel InxAl1-xn/GaN-based HEMT
Structures
Dr. N. Mohankumar, A.Mohanbabu, S.Baskaran, P.Anandan, N.Anbuselvan, and P. Bharathi
A3016
Vikkiraman
SKP Engineering college,Tiruvannamalai,Tamilnadu, India
Abstract
In this paper, we propose a physics-based analytical model of novel InAlN/GaN High Electron Mobility
Transistor (HEMT) by considering the quasi-triangular quantum well with minimal empirical parameters.
The derived model is compared for different short and long gate length devices. The results are
calibrated and verified with experimental data over a full range for gate and drain applied voltages.
Significant improvement in ns, drain Current, and transconductance are observed for InAlN HEMT
making it suitable for nanoscale and microwave analysis in circuit design. Therefore, the proposed
model can deal directly with device/physical parameters, and it can be expressed by a very small
number of model parameters.
Influence of Spindle Speed on Exit Burr Height in Drilling Forging Brass
A1003
Mr. Manit Timata and Charnnarong Saikaew
Department of Industrial Engineering, Khon Kaen University, Thailand
- 19 -
Doha, Qatar, 2015
Abstract
In the drilling of forging materials, exit burrs are produced on the end of hole and had some undesirable
characters leading to assembly quality problem. Deburring is one of the practical techniques used to
solve this problem. However, this technique is a time consuming and causes high operation cost. Hence
this work presented an experimental study in drilling forging brass using special tungsten carbide drilling
tools. The exit burr size was evaluated at various spindle speeds and lot size. Effect of spindle speed on
exit burr height was investigated using analysis of variance (ANOVA). The results of ANOVA indicated
that the spindle speed of 415 rpm gave lowest exit burr height and produced higher quantity and quality
of products.
The Effects of Biogas Volume and Temperature on the Moisture Content of Organic Fertilizer Subjected
to Rotary Drum Gas Dryer Procedures
A039
Mr. Anuwit Sonsiri and Thana Radpukdee
Industrial Engineering Khon Kaen University, Thailand
Abstract
Different factors can influence the moisture content of product in an organic fertilizer drying process. In
this study, biogas volume flow rate and burner temperature were systematically studied in an effort to
ascertain their effect on the moisture content of organic fertilizer grain that had been subjected to rotary
drum indirect heating procedures. It was found that these two factors did major effect on the moisture
content of organic fertilizer in a rotary drum drying process. Additionally, it was also discovered that
acceptable organic fertilizer moisture content occurred when the rotary drum drier utilized both the
biogas volume flow rate of 0.058 m3/min. in combination with the drying temperature of 500 oC while the
percentage of biogas blower and burner operation were reduced by 22.67 % and 9.1%, respectively.
CdTe/PbTe Superlattice Energy Bands Analysis Using k.p Method
Asst. Prof. Amal Kabalan
Villanova University, United States
Abstract
A model based on the k.p perturbation theory to compute the energy bands in a CdTe/PbTe superlattice
A003
structure is developed.
The model uses the dispersion relations for the heavy hole, light hole and the
split off bands to compute the effective bandgap in a CdTe/PbTe superlattice structure. Given a certain
thickness of the layers composing the superlattice the model computes the effective bandgap. This
model will be used towards understanding the relationship between film thickness and optical bandgaps
in a CdTe/PbTe superlattice. The end goal is to tailor the optical bandgap of a CdTe/PbTe superlattice to
result in maximum efficiency when used in a solar cell.
Preparation and Characterization of Hydrogels Based on Chitsoan/Polyvinyl Alcohol Blends
Ms. Sofia Kara Slimane and Mohamed Amine Zitouni
University Abou Bekr Belkaid, Department of Chemistry, BP 119 Tlemcen. Algeria
Abstract
In this study, a series of poly (vinyl alcohol) (PVA)/chitosan (CS) hydrogels with different weight ratio of
PVA to CS were prepared by freezing-thawing (F-T) method. The structure, morphology, and crystallinity
A049
of hydrogels were investigated by Fourier Transform Infrared (FT-IR), scanning electron microscopy
(SEM) and differential scanning calorimetry (DSC). FTIR demonstrated the presence of strong
intermolecular hydrogen bonds between CS and PVA molecules. SEM images showed that the higher the
chitosan, the greater the porous size of the hydrogel and DSC confirmed that crystallinity is higher when
PVA is more in hydrogel. The mechanical properties of these hydrogels were studied by rheometry. The
study of swelling ability demonstrated that the hydrogel developed with PVA and Cs was more swellable
than that with PVA only because of its cross-linking interaction with PVA.
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Doha, Qatar, 2015
Energy Loss Analysis and Magnetic Properties of Non-Oriented Electrical Steel Cut through Different
Technologies
A008
Asst. Prof. Veronica Manescu (Paltanea), Gheorghe Paltanea, and Horia Gavrila
Politehnica University from Bucharest, Electrical Engineering Department, Romania
Abstract
Non-oriented silicon iron (NO Fe-Si) alloys are soft magnetic materials used in the construction of
medium and high power rotating machines. To obtain efficiency higher than 95%, it is necessary to
promote a new design of their magnetic circuits and/or alternative cutting technologies. There were
tested steel samples of fully processed non-oriented silicon iron (NO FeSi) grades, M400-65A and
M800-65A, with an area of 300 × 30 mm2. The magnetic properties were measured with a single strip
tester in the range of frequency from 10 ÷ 200 Hz at 1 T peak magnetic polarization. The sheet cutting
technologies, involved in this study, are mechanical, laser, water-jetting and electro-erosion.
Parametric Requirements for Optimum Performance of InGaP/GaAs Heterojonction Solar Cell
A011
Dr. B.Hadri and F.Djaafar
Electromagnetism and guided optic laboratory Mostaganem University, Algeria
Abstract
In this paper, we analyze the temperature effect on the performance of photovoltaic cells using a virtual
wafer fabrication TCAD Silvaco. As is often done, the previous work on this solar cell involved optimizing
it at 300 K, even though operating temperatures are typically higher. Therefore, for this article, we
model the InGaP/GaAs heterojunction solar cell from 275 °K to 375° K in 25°K increments while
varying their thicknesses and doping levels, as well as varying the molar fraction of InAlAsP, AlGaAs
and InGaP. We chose to vary these design parameters to observe their effect on performance and
suggest a better design for operating at higher temperatures.
Physical parameters affecting on the electrode performance for proton exchange membrane fuel cells
(PEMFCs)
Mr. Chebbi Rachid, Wan Ramli Wan Daud, Beicha Abdellah, and Mohd Ambar Yarmo
Departement of industrial chemistry, Faculty of Science and Technology, Mohamed Khider University
07000 Biskra, Algeria
Abstract
Physical parameters effects are considered as sticking point to increase and decrease the electrode
performance for PEMFCs, which is related to the electrode structural degradation under diverse
A3031
operating conditions, such as various air and hydrogen pressures, humidifier temperatures, and air and
hydrogen flow rates. The operating for electrode prepared with 20 wt% Pt loaded 0.3 mgPt/cm2 in
single cell (25 cm2) showed that diverse parameters as pressures, humidifier temperatures, flow rate of
air /hydrogen have an effects on the electrode performance. Results show better power density for high
pressure, high air flow rate, and for low humidifier temperature, low H2 flow rate. The increase in
pressure ratio results increases in the current density and power density from 91.96 to 99.96 mA/cm2
and from 32.56{mW/cm2} to 35.48 {mW/cm2} for an air/H2 ratio of 1/0.5 bar and 3/2 bar, respectively.
The hydrogen and air flow with the stoichiometry coefficient ratio 2/1 is the best value to achieve
better performance by a flow rate of 0.3 L/min for H2 and 0.6 L/min for air, which correspond to a
current density and power density of 103.96{mA/cm2}and 31.56{mW/cm2}.
19:00 pm-20:00 pm
Dinner Olives Restaurant
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Doha, Qatar, 2015
January 8th (Thursday Afternoon)
Poster Presentations
Improvement and Control of a cement slurry formulation Resistant to the Critical Conditions HPHT
Ms. Soumia BECHAR and Djamal ZERROUKI
Univ Ouargla, faculty of applied science, laboratory interaction dynamics and systems reactivity, 30000
Ouargla, Algeria
A024
Abstract.
The ambition of the world oil industry is currently directed toward the deepest traps of oil and gas,
despite the very high temperatures. The objective of this study is to improve and control a conventional
formulation of cement slurry that meets the critical conditions during the cementing of 7" liner on high
pressure/high temperature (HPHT) gas well at 5570m depth, located at Hassi Berkine in the southern
Algeria. Under the influence of high temperature, the characteristics of the cement slurry changed. We
carried out several tests on various samples in order to revise the design by using equivalent
substitutions of the additives to obtain a better profile. The use of a new, very powerful, synthetic
retarder (SR-31L) instead of liquid, modified sodium lignosulfonate (R-15 L) led us to obtain a significant
thickening time but decreased the rheological properties as well as fluid loss and free water. We also
provided a gas block by introducing latex-styrene-butadiene with a specific stabilizer (LS-1) in
combination with a compatible bonding agent (amorphous silica) in aqueous suspension (BA-58L). The
study determined one of the best cement slurry designs practicable on different down-hole applications
in HPHT wells.
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Doha, Qatar, 2015
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